Are you passing full PRG name including path?

>I'm using TFS 2010 with the upgrade build template so I can use the old style MSBuild xml template to dictate what to do. I have a target section defined to execute VFP, passing my build prg file name as a parameter.
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>If I do this manually on the build box from the command prompt, VFP launches and runs the prg and the build executes flawlessly. However, when trying to queue the build from TFS, it looks like it's just launching VFP and then doing nothing. My first line of code is to store info in a text file via STRTOFILE, and that action is not taking place. From a TFS build perspective, the command ends up timing out and VFP9.EXE remains in the process list in task manager doing nothing.
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>Any ideas?